Mixing device for oil burners



- Filed Nov. 18, 1946 v 2 Sheets-Sheet z Oc t.3 1950 'PAIT I 2524,41:

MIXING DEVICE FQR OIL BURNERS I "rel/tor Waid 0. Pd if W WM Patented Oct3, 1950 UNITED STATES PATENT oFFIc 2,524,471 1 MIXING DEVICE For: OILBURNERS Wald C. Pait, Bladenboro, N. C. Application November 18, 1946,Serial No. 710,588

disassembled for purposes of cleaning, inspection orrepair.

An additional object of the invention is to provide an oil burner whichis otherwise well adapted for the purpose for which it is intended.

With the above more important objects in view, and such other objects asmay become apparent as this specification proceeds, the inventionconsists essentially of the arrangement and construction of parts asillustrated in the accompanying drawings, in which:

Figure 1 is an end view of the invention, taken in the direction of thearrow I in Figure 2;

Figure 2 is a cross sectional view, taken substantially in the plane ofthe line 2-2 in Figure 1; I

Figure 3 is a cross sectional view, taken substantially in the plane ofthe line 33 of Figure 2;

Figure 4 is a cross sectional view, taken substantially in the plane ofthe line 4-4 in Figure 3, and

Figure 5 is an end view of a flame spreader plate used'in the invention,the same being taken in the direction of the arrow 5 in Figure 4] Likecharacters of reference are used to designate like parts in thespecification and throughout the several views.

Referring now to the accompanying drawings in detail, the inventionconsists of an oilburner designated generally by the reference characterII], the same embodying in its construction a horizontally disposed,tubular enclosure II provided adjacent one end thereof with a circularfire wall I2.

The fire wall I2 isretained in position by a plurality of lugs orbrackets I3 which are welded or otherwise secured to the fire wall andcom nected to the enclosure II by suitable bolts or rivets I4.

The wall I2 is also provided with a central air opening I5 and with aplurality of auxiliary air openings I6, as is best shown in Figures 1and 3.

I'CIaim. (01. 158-91) The mixing device designatedgenerally bythereference character I! consists of a horizontally disposed tubularmember I8 secured at one end thereof to the fire wall I2 in registerwith the air opening I5. The interior of the member I 8 thus provides anair passage and a horizontal sleeve I9 is also secured at one endthereof to the wall I2 in spaced relation with. respect to the memberI8, thus affording an annular mixing chamber I9.

The sleeve I9 is provided with a screw threaded boss 20, this receivinga fuel inlet nozzle 2| which, in turn, is connected to a suitable fueldelivery pipe 22 equipped with a control valve 23. It will be observedthat the nozzle 2| is disposed in a substantially vertical position.

The outer surface of the member I8 is provided with a fuel receivingwell 24 and with a plurality of fuel channels 25 which extendfrom I8,directly below the nozzle 2 I.

A cone-shaped flame spreader plate and air deflector 21 is provided onthe inner surface thereof with a plurality of equally spaced lugs 28,these in turn, being recessed as at 29 to engage the edge portion 26 ofthe member I8. It will be noted that the plateZ'I is spaced from themember I8 as well as the sleeve I9 and a suitable bolt 30, equipped witha nut 3 I, is employed for mounting the plate in position.

The bolt 30 extends through a suitable aperture provided in a cross bar32 which is secured in the member I8 adjacent the opening I5.

When the invention is placed in use, fuel will gravitate from the nozzle2| into the well 24 and along the channels 25, and the initial supply ofair in the chamber I9 will be sufficient to facilitate combustion assoon as the fuel is ignited. This combustion will take place in thechamber l9 and the flames will pass outwardly therefrom through the openend of the chamber, being effectively spread in lateral directions bythe plate 21. As the initial supply of air in the chamber I9 is used, afresh supply of air will be drawn through the member I8 and deflected bythe plate 2! into the chamber, so as to sustain combustion. In addition,fresh air will be admitted into the enclosure I I through the auxiliaryopenings IE to sustain the flames passing outwardly from the chamber I9.

The plate 2'! will effectively spread the flame and efficientdistribution of heat throughout the cross section of the ensclosure IIwill thus be facilitated.

It is believed that the advantages and use of the invention will beclearly apparent from the foregoing disclosure and accordingly, furtherdescription thereof at this point is deemed unnecessary.

While in the foregoing there has been shown and described the preferredembodiment of this invention it is to be understood that minor changesin the details of construction, combination and arrangement of parts maybe resorted to without departing from the spirit and scope of theinvention as claimed.

What I claim as my invention is:

In a mixing device for oil burners, the combination of a horizontallydisposed tubular member defining an air passage having inner and outerends, the outer surface of said member being provided at the top thereofwith a fuel receiving Well and with a plurality of fuel channelsextending downwardly in opposite directions from said well to the outerend of said member, a horizontally disposed sleeve surrounding saidmember in spaced relation and coacting therewith to provide an annularmixing chamber having a closed inner end and an open outer end, saidsleeve being provided at the top thereof with a fuel inlet disposedabove said well whereby fuel may gravitate from said inlet into the Welland along the channels of said member, and a combined air deflecting andflame spreading plate mounted vertically adjacent the open end of saidchamber whereby air travelling through said passage may enter thechamber to support combustion of fuel in said channels.

' WAID C. PAIT.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,267,811 Smedegaard May 28, 19181,886,667 Fowler Nov. 8, 1932 2,174,818 Brace Oct. 3, 1939 2,405,427Holthouse Aug. 6, 1946 FOREIGN PATENTS Number Country Date 775,945France Oct. 22, 1934

